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| 1 /* | |
| 2 * Copyright (C) 2011 Research In Motion Limited. All rights reserved. | |
| 3 * | |
| 4 * This library is free software; you can redistribute it and/or | |
| 5 * modify it under the terms of the GNU Library General Public | |
| 6 * License as published by the Free Software Foundation; either | |
| 7 * version 2 of the License, or (at your option) any later version. | |
| 8 * | |
| 9 * This library is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 * Library General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU Library General Public License | |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 * Boston, MA 02110-1301, USA. | |
| 18 */ | |
| 19 | |
| 20 #ifndef HexNumber_h | |
| 21 #define HexNumber_h | |
| 22 | |
| 23 #include <wtf/text/StringConcatenate.h> | |
| 24 | |
| 25 namespace WTF { | |
| 26 | |
| 27 enum HexConversionMode { | |
| 28 Lowercase, | |
| 29 Uppercase | |
| 30 }; | |
| 31 | |
| 32 namespace Internal { | |
| 33 | |
| 34 const LChar lowerHexDigits[17] = "0123456789abcdef"; | |
| 35 const LChar upperHexDigits[17] = "0123456789ABCDEF"; | |
| 36 inline const LChar* hexDigitsForMode(HexConversionMode mode) | |
| 37 { | |
| 38 return mode == Lowercase ? lowerHexDigits : upperHexDigits; | |
| 39 } | |
| 40 | |
| 41 }; // namespace Internal | |
| 42 | |
| 43 template<typename T> | |
| 44 inline void appendByteAsHex(unsigned char byte, T& destination, HexConversionMod
e mode = Uppercase) | |
| 45 { | |
| 46 const LChar* hexDigits = Internal::hexDigitsForMode(mode); | |
| 47 destination.append(hexDigits[byte >> 4]); | |
| 48 destination.append(hexDigits[byte & 0xF]); | |
| 49 } | |
| 50 | |
| 51 template<typename T> | |
| 52 inline void placeByteAsHexCompressIfPossible(unsigned char byte, T& destination,
unsigned& index, HexConversionMode mode = Uppercase) | |
| 53 { | |
| 54 const LChar* hexDigits = Internal::hexDigitsForMode(mode); | |
| 55 if (byte >= 0x10) | |
| 56 destination[index++] = hexDigits[byte >> 4]; | |
| 57 destination[index++] = hexDigits[byte & 0xF]; | |
| 58 } | |
| 59 | |
| 60 template<typename T> | |
| 61 inline void placeByteAsHex(unsigned char byte, T& destination, HexConversionMode
mode = Uppercase) | |
| 62 { | |
| 63 const LChar* hexDigits = Internal::hexDigitsForMode(mode); | |
| 64 *destination++ = hexDigits[byte >> 4]; | |
| 65 *destination++ = hexDigits[byte & 0xF]; | |
| 66 } | |
| 67 | |
| 68 template<typename T> | |
| 69 inline void appendUnsignedAsHex(unsigned number, T& destination, HexConversionMo
de mode = Uppercase) | |
| 70 { | |
| 71 const LChar* hexDigits = Internal::hexDigitsForMode(mode); | |
| 72 Vector<LChar, 8> result; | |
| 73 do { | |
| 74 result.prepend(hexDigits[number % 16]); | |
| 75 number >>= 4; | |
| 76 } while (number > 0); | |
| 77 | |
| 78 destination.append(result.data(), result.size()); | |
| 79 } | |
| 80 | |
| 81 // Same as appendUnsignedAsHex, but using exactly 'desiredDigits' for the conver
sion. | |
| 82 template<typename T> | |
| 83 inline void appendUnsignedAsHexFixedSize(unsigned number, T& destination, unsign
ed desiredDigits, HexConversionMode mode = Uppercase) | |
| 84 { | |
| 85 ASSERT(desiredDigits); | |
| 86 | |
| 87 const LChar* hexDigits = Internal::hexDigitsForMode(mode); | |
| 88 Vector<LChar, 8> result; | |
| 89 do { | |
| 90 result.prepend(hexDigits[number % 16]); | |
| 91 number >>= 4; | |
| 92 } while (result.size() < desiredDigits); | |
| 93 | |
| 94 ASSERT(result.size() == desiredDigits); | |
| 95 destination.append(result.data(), result.size()); | |
| 96 } | |
| 97 | |
| 98 } // namespace WTF | |
| 99 | |
| 100 using WTF::appendByteAsHex; | |
| 101 using WTF::appendUnsignedAsHex; | |
| 102 using WTF::appendUnsignedAsHexFixedSize; | |
| 103 using WTF::placeByteAsHex; | |
| 104 using WTF::placeByteAsHexCompressIfPossible; | |
| 105 using WTF::Lowercase; | |
| 106 | |
| 107 #endif // HexNumber_h | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk